Initial support for composable upgrades with Heat+Ansible

This shows how we could wire in the upgrade steps using Ansible
as was previously proposed e.g in https://review.openstack.org/#/c/321416/
but it's more closely integrated with the new composable services
architecture.

It's also very similar to the approach taken by SpinalStack where
ansible snippets per-service were combined then run in a series of
steps using Ansible tags.

This patch just enables upgrade of keystone - we'll add support for
other patches in subsequent patches.

Partially-Implements: blueprint overcloud-upgrades-per-service
Change-Id: I39f5426cb9da0b40bec4a7a3a4a353f69319bdf9

1 files changed, 21 insertions, 0 deletions

diff --git a/overcloud.j2.yaml b/overcloud.j2.yaml
index ba1c6b36..e2c05eef 100644
--- a/overcloud.j2.yaml
+++ b/overcloud.j2.yaml
@@ -604,6 +604,21 @@ resources:
         {{role.name}}: {get_attr: [{{role.name}}ServiceChain, role_data]}
 {% endfor %}
 
+  # Upgrade steps for all roles
+  AllNodesUpgradeSteps:
+    type: OS::TripleO::UpgradeSteps
+    depends_on: AllNodesDeploySteps
+    properties:
+      servers:
+{% for role in roles %}
+        {{role.name}}: {get_attr: [{{role.name}}, attributes, nova_server_resource]}
+{% endfor %}
+      role_data:
+{% for role in roles %}
+        {{role.name}}: {get_attr: [{{role.name}}ServiceChain, role_data]}
+{% endfor %}
+
+
 outputs:
   ManagedEndpoints:
     description: Asserts that the keystone endpoints have been provisioned.
@@ -636,3 +651,9 @@ outputs:
 {% for role in roles %}
       {{role.name}}: {get_attr: [{{role.name}}ServiceChain, role_data, service_names]}
 {% endfor %}
+  RoleData:
+    description: The configuration data associated with each role
+    value:
+{% for role in roles %}
+      {{role.name}}: {get_attr: [{{role.name}}ServiceChain, role_data]}
+{% endfor %}